TY - JOUR
T1 - Preparation and Structure Refinement of Monoclinic Hydroxyapatite
AU - Ikoma, Toshiyuki
AU - Yamazaki, Atsushi
AU - Nakamura, Satoshi
AU - Akao, Masaru
PY - 1999/5
Y1 - 1999/5
N2 - Monoclinic hydroxyapatite was synthesized by a wet method followed by heating in air at 1473 K for 1 h. The product is carbonate-free and has a Ca/P ratio of 1.65, which is slightly lower than the theoretical value (1.67) of hydroxyapatite. The crystal structure was investigated by Rietveld refinement using X-ray powder diffraction data. The structure has monoclinic symmetry with the space groupP21/b(No. 14),Z=4,Dx=3.14 g cm-3, and the lattice constants area=9.426(3) Å,b=18.856(5) Å,c=6.887(1) Å, andγ=119.97(1)°. The hydroxyl ions have an ordered arrangement along the hydroxyl columns. The hydroxyapatite prepared in the present study is 98% monoclinic.
AB - Monoclinic hydroxyapatite was synthesized by a wet method followed by heating in air at 1473 K for 1 h. The product is carbonate-free and has a Ca/P ratio of 1.65, which is slightly lower than the theoretical value (1.67) of hydroxyapatite. The crystal structure was investigated by Rietveld refinement using X-ray powder diffraction data. The structure has monoclinic symmetry with the space groupP21/b(No. 14),Z=4,Dx=3.14 g cm-3, and the lattice constants area=9.426(3) Å,b=18.856(5) Å,c=6.887(1) Å, andγ=119.97(1)°. The hydroxyl ions have an ordered arrangement along the hydroxyl columns. The hydroxyapatite prepared in the present study is 98% monoclinic.
KW - Hydroxyapatite
KW - Monoclinic phase
KW - Rietveld refinement
KW - Wet method
KW - X-ray powder diffraction
UR - http://www.scopus.com/inward/record.url?scp=0001579499&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001579499&partnerID=8YFLogxK
U2 - 10.1006/jssc.1998.8120
DO - 10.1006/jssc.1998.8120
M3 - Article
AN - SCOPUS:0001579499
VL - 144
SP - 272
EP - 276
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 2
ER -